2 Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 #if (MATRIX_COLS <= 8)
29 # define print_matrix_header() print("\nr/c 01234567\n")
30 # define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
31 # define matrix_bitpop(i) bitpop(matrix[i])
32 # define ROW_SHIFTER ((uint8_t)1)
33 #elif (MATRIX_COLS <= 16)
34 # define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
35 # define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
36 # define matrix_bitpop(i) bitpop16(matrix[i])
37 # define ROW_SHIFTER ((uint16_t)1)
38 #elif (MATRIX_COLS <= 32)
39 # define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
40 # define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
41 # define matrix_bitpop(i) bitpop32(matrix[i])
42 # define ROW_SHIFTER ((uint32_t)1)
46 extern const matrix_row_t matrix_mask[];
49 #if (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
50 static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
51 static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
54 /* matrix state(1:on, 0:off) */
55 static matrix_row_t matrix[MATRIX_ROWS];
58 #if (DIODE_DIRECTION == COL2ROW)
59 static void init_cols(void);
60 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
61 static void unselect_rows(void);
62 static void select_row(uint8_t row);
63 static void unselect_row(uint8_t row);
64 #elif (DIODE_DIRECTION == ROW2COL)
65 static void init_rows(void);
66 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
67 static void unselect_cols(void);
68 static void unselect_col(uint8_t col);
69 static void select_col(uint8_t col);
72 __attribute__ ((weak))
73 void matrix_init_quantum(void) {
77 __attribute__ ((weak))
78 void matrix_scan_quantum(void) {
82 __attribute__ ((weak))
83 void matrix_init_kb(void) {
87 __attribute__ ((weak))
88 void matrix_scan_kb(void) {
92 __attribute__ ((weak))
93 void matrix_init_user(void) {
96 __attribute__ ((weak))
97 void matrix_scan_user(void) {
101 uint8_t matrix_rows(void) {
106 uint8_t matrix_cols(void) {
110 void matrix_init(void) {
112 // initialize row and col
113 #if (DIODE_DIRECTION == COL2ROW)
116 #elif (DIODE_DIRECTION == ROW2COL)
121 // initialize matrix state: all keys off
122 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
126 matrix_init_quantum();
129 uint8_t matrix_scan(void)
132 #if (DIODE_DIRECTION == COL2ROW)
133 // Set row, read cols
134 for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
135 read_cols_on_row(matrix, current_row);
137 #elif (DIODE_DIRECTION == ROW2COL)
138 // Set col, read rows
139 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
140 read_rows_on_col(matrix, current_col);
144 matrix_scan_quantum();
149 bool matrix_is_modified(void)
155 bool matrix_is_on(uint8_t row, uint8_t col)
157 return (matrix[row] & ((matrix_row_t)1<col));
161 matrix_row_t matrix_get_row(uint8_t row)
163 // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
164 // switch blocker installed and the switch is always pressed.
166 return matrix[row] & matrix_mask[row];
172 void matrix_print(void)
174 print_matrix_header();
176 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
177 phex(row); print(": ");
178 print_matrix_row(row);
183 uint8_t matrix_key_count(void)
186 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
187 count += matrix_bitpop(i);
194 #if (DIODE_DIRECTION == COL2ROW)
196 static void init_cols(void)
198 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
199 setPinInputHigh(col_pins[x]);
203 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
205 // Store last value of row prior to reading
206 matrix_row_t last_row_value = current_matrix[current_row];
208 // Clear data in matrix row
209 current_matrix[current_row] = 0;
211 // Select row and wait for row selecton to stabilize
212 select_row(current_row);
216 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
218 // Select the col pin to read (active low)
219 uint8_t pin_state = readPin(col_pins[col_index]);
221 // Populate the matrix row with the state of the col pin
222 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
226 unselect_row(current_row);
228 return (last_row_value != current_matrix[current_row]);
231 static void select_row(uint8_t row)
233 setPinOutput(row_pins[row]);
234 writePinLow(row_pins[row]);
237 static void unselect_row(uint8_t row)
239 setPinInputHigh(row_pins[row]);
242 static void unselect_rows(void)
244 for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
245 setPinInput(row_pins[x]);
249 #elif (DIODE_DIRECTION == ROW2COL)
251 static void init_rows(void)
253 for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
254 setPinInputHigh(row_pins[x]);
258 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
260 bool matrix_changed = false;
262 // Select col and wait for col selecton to stabilize
263 select_col(current_col);
267 for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++)
270 // Store last value of row prior to reading
271 matrix_row_t last_row_value = current_matrix[row_index];
273 // Check row pin state
274 if (readPin(row_pins[row_index]) == 0)
276 // Pin LO, set col bit
277 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
281 // Pin HI, clear col bit
282 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
285 // Determine if the matrix changed state
286 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
288 matrix_changed = true;
293 unselect_col(current_col);
295 return matrix_changed;
298 static void select_col(uint8_t col)
300 setPinOutput(col_pins[col]);
301 writePinLow(col_pins[col]);
304 static void unselect_col(uint8_t col)
306 setPinInputHigh(col_pins[col]);
309 static void unselect_cols(void)
311 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
312 setPinInputHigh(col_pins[x]);